Axial straight rib linkage laying machine head

Abstract

In order to attach a transverse rib to a finished HDPE winding pipe while using a winding type forming process, and the transverse rib needs to be consistent with the winding type forming pipe to have the capacity of coherent production, a plastic extruder head needs to be designed, and the plastic extruder head and the winding type forming pipe rotate synchronously while the transverse rib is extruded. The utility model designs an axial straight rib linkage laying machine head which comprises a shell which is fixed on an external rack and at least comprises two parts which are combined into a ring shape, and a groove is formed in the shell and used for placing an extrusion ring; the extrusion ring is embedded into the shell, a communicating groove is formed in the top surface of the ring, an extrusion opening die is installed on an inner ring, the communicating groove is communicated with the extrusion opening die, through holes are axially formed in the surface of the extrusion ring, and the through holes are formed in the extrusion ring at equal intervals; the groove of the shell is matched with the communicating groove of the extrusion ring to form an annular cavity; and an input hole is formed in the shell and is communicated with an external plastic extruder and the annular cavity.

Description

Technical Field

[0001] The utility model relates to production equipment for HDPE winding pipes, in particular to an axial straight reinforcement linkage laying machine head. Background Art

[0002] HDPE is a good pipe. It should not only have good economy, but also have a series of advantages such as stable and reliable interface, material impact resistance, crack resistance, aging resistance, corrosion resistance, etc. Compared with traditional pipes, HDPE pipeline system has a series of advantages. For this reason, HDPE corrugated pipes have replaced traditional pipes. HDPE corrugated pipes are divided into two production forms, one is extrusion double-wall corrugated pipes, and the other is winding corrugated pipes. The production process of double-wall corrugated pipes is an extrusion molding process. The mold size of the equipment should be the same as the diameter of the pipe. Therefore, if large-diameter HDPE double-wall corrugated pipes are to be produced, mechanical equipment with large-diameter molds is required, and the R&D cost of such equipment is quite high. Due to the production process, the winding pipe will not be limited by the size of the equipment mold, so large-diameter pipes can be manufactured in terms of molding process. At the same time, the utilization rate of winding production materials is higher than that of extrusion molding process, which can effectively save costs.

[0003] HDPE corrugated pipes usually have qualified ring stiffness, but there may be unexpected bending when facing bending. For this reason, it is necessary to add axially parallel transverse ribs to increase the bending resistance. Traditional extruded corrugated pipes can extrude transverse ribs at the same time as the outer shell is extruded. However, because the design usually also designs circumferential reinforcement ribs for ring stiffness, the combination of the surrounding reinforcement ribs and the transverse ribs will cause the extruded transverse ribs to be discontinuous, thereby reducing the maximum bending resistance of the transverse ribs. Due to its production process, traditional wound corrugated pipes cannot attach transverse ribs while winding. If the transverse ribs need to be reattached after cutting, the production speed will be reduced, thereby losing the production advantage of wound corrugated pipes.

[0004] In order to be able to attach cross ribs to the finished HDPE winding pipe while using the winding molding process, and the cross ribs need to have the same production capacity as the winding molding pipe, it is necessary to design a plastic extruder head that can extrude the cross ribs while rotating synchronously with the winding molding pipe. Summary of the invention

[0005] The utility model designs an axial straight reinforcement linkage laying machine head in view of the fact that a fixed-length adhesion method is not suitable for a HDPE winding pipe due to the requirements of the molding process.

[0006] An axial straight reinforcement linkage laying machine head, comprising:

[0007] The housing is fixed to the external frame and comprises at least two parts, which are assembled into a ring and contain a groove for accommodating the extrusion ring;

[0008] An extrusion ring, the extrusion ring is embedded in the shell, a connecting groove is arranged on the top surface of the ring, an extrusion die is installed on the inner ring, the connecting groove is connected with the extrusion die, a through hole is axially arranged on the surface of the extrusion ring, and the through holes are arranged at equal intervals on the extrusion ring;

[0009] The groove of the shell and the communicating groove of the extrusion ring cooperate to form an annular cavity;

[0010] An input hole is arranged on the shell body, the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity.

[0011] Blocking rings, two of which are arranged on the front and back sides of the shell in the axial direction, and are used to block the gap between the shell and the extrusion ring;

[0012] The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

[0013] The extrusion ring includes two concentric ring bodies, wherein the part embedded in the housing groove is the outer ring body, and the outer ring body includes a connecting groove;

[0014] The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body;

[0015] The through hole is arranged on the inner ring body, and the extrusion die is installed on the inner ring of the inner ring body.

[0016] Preferably, an electric heating belt is provided on the blocking ring, and the electric heating belt is provided on the L-shaped vertical surface of the blocking ring to maintain the stability of the molten plastic in the annular cavity.

[0017] Preferably, a convex ring is integrally formed in the housing groove, the width of the convex ring matches the width of the connecting groove, and is inserted into the connecting groove; the convex ring is used to further reduce the problem of plastic overflow.

[0018] The beneficial effect of the utility model is that the machine head can rotate along with the production rhythm of the winding corrugated pipe, so as to maintain the horizontality of the transverse ribs in the axial direction instead of winding on the outer peripheral surface of the corrugated pipe, thereby meeting the production requirements of the transverse rib corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Front assembly diagram of the machine head of the utility model;

[0020] Figure 2 A circumferential cross-sectional view of the housing and the extrusion ring of the utility model after assembly;

[0021] In the figure: a. wound corrugated tube, 1. shell, 2. extrusion ring, 3. extrusion die, 4. through hole, 5. input hole, 6. blocking ring, 7. annular cavity. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0023] like Figure 1 and Figure 2 As shown, the axial straight reinforcement linkage laying machine head is arranged on the output axis of the winding machine of the corrugated pipe (HDPE winding pipe, PE winding pipe) to be wound, wherein Figure 1 The a mark in the figure indicates the bellows in production.

[0024] The axial straight rib linkage laying machine head comprises: a housing 1 fixed to an external frame, comprising two left and right parts, combined into a ring shape, and containing a groove for placing an extrusion ring 2;

[0025] An extrusion ring 2 is embedded in the shell, a connecting groove is arranged on the top surface of the ring, an extrusion die 3 is installed on the inner ring, the connecting groove is connected with the extrusion die 3, a through hole 4 is axially arranged on the surface of the extrusion ring, and the through holes are arranged at equal intervals on the extrusion ring; the through holes are used to connect the drive disk, so that the extrusion ring can rotate at the same speed as the corrugated pipe a, thereby keeping the transverse ribs extruded by the extrusion die 3 in axial straight line forming.

[0026] The groove of the housing and the communicating groove of the extrusion ring cooperate to form an annular cavity 7;

[0027] An input hole 5 is provided on the housing, and the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity. Figure 1 The input hole 5 in the device is in the shape of a circular tube.

[0028] Blocking rings 6, two of which are arranged on the front and back sides of the shell in the axial direction, and are used to block the gap between the shell and the extrusion ring;

[0029] The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

[0030] The extrusion ring 2 includes two concentric ring bodies, wherein the portion embedded in the housing groove is the outer ring body, and the outer ring body includes a connecting groove;

[0031] The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body; Figure 2 As shown in (C), the through hole 4 is arranged on the inner ring body, as shown in Figure 2 As shown in (b), the extrusion die 3 is installed on the inner ring of the inner ring body.

[0032] An electric heating belt is arranged on the blocking ring, and the electric heating belt is arranged on the L-shaped vertical surface of the blocking ring to maintain the stability of the molten plastic in the annular cavity.

[0033] A convex ring is integrally formed in the housing groove, the width of which matches the width of the connecting groove and is inserted into the connecting groove; the convex ring is used to further reduce the problem of plastic overflow.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An axial straight reinforcement linkage laying machine head, characterized in that: include: The housing is fixed to the external frame and comprises at least two parts, which are assembled into a ring and contain a groove for accommodating the extrusion ring; An extrusion ring, the extrusion ring is embedded in the shell, a connecting groove is arranged on the top surface of the ring, an extrusion die is installed on the inner ring, the connecting groove is connected with the extrusion die, a through hole is axially arranged on the surface of the extrusion ring, and the through holes are arranged at equal intervals on the extrusion ring; The groove of the shell and the communicating groove of the extrusion ring cooperate to form an annular cavity; An input hole is arranged on the shell body, the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity.

2. The axial straight reinforcement linkage laying machine head according to claim 1, characterized in that: The extrusion ring includes two ring bodies, wherein the part embedded in the housing groove is the outer ring body, and the outer ring body includes a connecting groove; The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body; The through hole is arranged on the inner ring body, and the extrusion die is installed on the inner ring of the inner ring body.

3. The axial straight reinforcement linkage laying machine head according to claim 2, characterized in that: It also includes blocking rings, two of which are arranged on the front and back sides of the shell in the axial direction and are used to block the gap between the shell and the extrusion ring; The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

4. The axial straight reinforcement linkage laying machine head according to claim 3 is characterized in that: An electric heating belt is arranged on the blocking ring, and the electric heating belt is arranged on the L-shaped vertical surface of the blocking ring to maintain the stability of the molten plastic in the annular cavity.

5. The axial straight reinforcement linkage laying machine head according to claim 2, characterized in that: A convex ring is integrally formed in the housing groove, the width of which matches the width of the connecting groove and is inserted into the connecting groove; the convex ring is used to further reduce the problem of plastic overflow.

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